Ashvita Garg

HPV self-sampling among women in the United States: preferences for implementation

With the inclusion of primary HPV testing in 2018 U.S. Preventive Services Taskforce guidelines, at-home HPV self-sampling may provide a future option for cervical cancer screening, especially among hard-to-reach populations in the U.S. This study evaluated the association of implementation preferences with the willingness of at-home HPV self-sampling. We conducted a cross-sectional study in 2018 among U.S. women ages 30-65 years, without a hysterectomy (n = 812). The outcome was willingness to have at-home HPV self-sampling (yes/no). Primary predictor variables (i.e., information source, methods of payment, methods of sending or receiving self-sampling kits) measured self-sampling implementation preferences. Adjusted logistic regression identified associations with willingness to have at-home HPV self-sampling. Participants who preferred receiving information from healthcare providers (OR = 2.64; 95% CI 1.54,4.52) or from media or other sources (OR = 2.30; 95% CI 1.51,3.48) had higher HPV self-sampling willingness than participants who did not prefer those sources. Participants who did not want to pay for self-sampling (OR = 0.21; 95% CI 0.14,0.32) or did not know if they would pay for self-sampling (OR = 0.35; 95% CI 0.22,0.54) had lower odds of HPV self-sampling willingness compared to participants willing to pay. Participants who did not know which method they preferred for receiving a self-sampling kit (OR = 0.15, 95% CI 0.07,0.31) or preferred delivering the sample to the lab themselves (OR = 0.59; 95% CI 0.36,0.96) had lower odds for self-sampling willingness compared to participants who preferred the mail. Understanding the preferences of women regarding the implementation of HPV self-sampling can improve uptake in cervical cancer screening, especially among hard-to-reach populations.

Human Papillomavirus–Related Cancer Prevention Among People Experiencing Housing Instability: A Systematic Review

Background Human papillomavirus (HPV)–related cancer is highly preventable through HPV vaccination and cancer screening, but people experiencing homelessness or housing instability (PEH) may not engage in these behaviors due to conflicting priorities. This systematic review synthesized and estimated HPV-related cancer prevention behaviors among PEH. Methods Using PRISMA guidelines, articles published before 2023 were located via PubMed, Ovid/Medline, CINAHL, and Embase. Full-text, peer-reviewed studies that measured HPV-related cancer prevention in any sample of people experiencing homelessness were included. Two researchers abstracted data independently, with high interrater reliability (>90%). Results were narratively summarized with consensus, and proportions were compared using preventive behavior. Results After reviewing 405 articles, we included 18 articles from the United States from 1998 to 2022. There were 6674 people (e.g., women, youth, men who have sex with men) experiencing homelessness assessed for HPV-related cancer prevention behaviors. Pooled prevalence was approximately 59.8% (±6%) for cervical cancer screening in the last 3 years and 42.9% (±4.7%) for HPV vaccination initiation. Other factors related to housing instability and HPV-related cancer prevention included gender, sexual trauma, and procedural pain, with mixed results for housing status and HPV knowledge. Conclusions Findings demonstrate the varied adherence to HPV-related cancer prevention, with rates consistently below recommended World Health Organization guidelines. Future studies should adjust for specific risk factors in modeling that may be associated with or modified by the effects of homelessness and evaluate upstream prevention (e.g., vaccination) and other types of HPV-related cancer (e.g., anal cancer).